Will this diffuser scrape on steep driveway inclines?

The AF-1 profile extends lower than the OEM bumper for aerodynamic effect. Verify ground clearance at your property's steepest angles before committing to installation. High-impact driveways and steep approach angles require owner awareness — it's functional downforce geometry, not a styling piece that sits flush.

Do the diffuser fins come with this?

Fins are sold separately. This purchase includes the main diffuser panel only. Check your preferred fin style and order as an additional item to complete the look.

What prep work does FRP need before painting?

Sand and prep the surface using standard automotive prep techniques before applying your chosen primer and finish. FRP accepts paint well once the surface is properly abraded and cleaned. Work with your paint supplier on grit selection and primer compatibility for your specific topcoat.